code: def setUpClass(cls) -> None:
      GetData().download_data(
          file_name="csv_data_cn.zip", target_dir=SOURCE_DIR
      )
      TestDumpData.DUMP_DATA = DumpDataAll(
          csv_path=SOURCE_DIR,
          qlib_dir=QLIB_DIR,
          include_fields=cls.FIELDS,
      )
      TestDumpData.STOCK_NAMES = list(
          map(lambda x: x.name[:-4].upper(), SOURCE_DIR.glob("*.csv"))
      )
      provider_uri = str(QLIB_DIR.resolve())
      qlib.init(
          provider_uri=provider_uri,
          expression_cache=None,
          dataset_cache=None,
      )
  
file_path: qlib/tests/test_dump_data.py
imports: import sys
  import shutil
  import unittest
  from pathlib import Path
  import qlib
  import numpy
  import pandas
  from qlib.data import D
  from get_data import GetData
  from dump_bin import DumpDataAll, DumpDataFix
label_desc: Use image node_id 1 for calling the TestDumpData obj's underlying member method code with example usage: obj.setUpClass(cls) without return types